I feel like a horrible person for being happy that my best friend can’t have kids

I am adamantly child free and I’m going to get sterilized in the next year. I’ve heard about tons of people growing away from their friends because their friends settle down and have kids. My best friend and her significant other physically cannot have kids even though they want them. Her significant other has been through multiple rounds of battling cancer and all of his sperm are dead. They said they might adopt but they can’t really afford that in the foreseeable future.

Obviously I’m super sympathetic towards her and I feel horrible that she can’t have her dream but I’m secretly super excited that I’m still going to have my best friend around.

Am I a bad person? Are there any of you who have been through a similar situation and relate to me?

I feel like a horrible person for being happy that my best friend can’t have kids